Borrowing Guide: FCA Affordability Rules — What Lenders Must Check Before Approving Your Loan
Every time you apply for a loan, credit card, or mortgage in the UK, the lender is legally required to check whether you can genuinely afford the repayments. These affordability rules, set and enforced by the Financial Conduct Authority (FCA), exist to protect consumers from being trapped in unmanageable debt. Since the 2008 financial crisis and the subsequent overhaul of consumer credit regulation, responsible lending has moved from a vague aspiration to a concrete legal obligation — and lenders who fail to meet it can be forced to refund interest and charges. Understanding how affordability assessments work is valuable whether you are preparing to borrow, have recently been turned down for credit, or suspect that a lender approved you for more than you could realistically repay. The rules apply across the board — from payday loans and car finance to credit cards and residential mortgages — though the depth of the assessment varies with the size, duration, and risk of the product. With the Bank of England base rate at 3.75% as of December 2025, borrowing costs remain elevated compared to the ultra-low rates of the 2010s, making affordability checks more important than ever. This guide explains exactly what lenders must verify under FCA rules, your rights as a borrower, what to do if you are rejected, and how to complain if you believe a lender acted irresponsibly.